# SN74CBT16390DL (Component)
## Description
Multiplexer/Demultiplexer 16 x 1:2 56-SSOP
The SN74CBT16390 is a 16-bit to 32-bit switch
used in applications in which two separate data
paths must be multiplexed onto, or demultiplexed
from, a single path. This device can be used for
memory interleaving, in which two different banks
of memory must be addressed simultaneously.
This device also can be used to connect or isolate
the PCI bus to one or two slots simultaneously.
Two output enables (OE1 and OE2) control the
data flow. When OE1 is low, A port is connected
to 1B port. When OE2 is low, A port is connected
to 2B port. When both OE1 and OE2 are low, the
A port is connected to both 1B and 2B ports. The
control inputs can be driven with a 5-V CMOS,
5-V TTL, or an LVTTL driver.
Key Features
16-bit to 32-bit FET multiplexer/demultiplexer bus switch
Operates from 4.5 V to 5.5 V
Low ON-state resistance for high-speed signal switching
Near-zero propagation delay through the switch
Dual output-enable (OE1, OE2) controls for flexible routing
TTL-compatible control inputs
Supports memory interleaving and PCI bus applications
Low power consumption
ESD protection compliant with JESD22 standards
Operating temperature range: −40°C to +85°C
Available in a 56-pin SSOP (DL) package
#BusSwitch #Multiplexer #Demultiplexer #Widebus #DigitalLogic #HighSpeedInterface #MemoryInterleaving #PCIBus #TexasInstruments #SN74CBT16390 #SSOP56
## Component Details
- **Owner:** lcsc
- **Created:** 11/4/2024
- **Last Updated:** 6/27/2026
- **Visibility:** Public
- **Package or Case Code:** SSOP-56_L18.4-W7.5-P0.64-LS10.3-BL
- **JLCPCB Part Class:** Extended Part
- **Part Type:** Analog Switches / Multiplexers
- **Datasheet URL:** https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/126b13ac866832996a9d5982d90b4609659a16a47de82cdc4b343f0dbf24a350.pdf
- **LCSC Part Number:** C2870741
- **Manufacturer Part Number:** SN74CBT16390DL
- **Manufacturer Name:** TI(德州仪器)
- **Symbol Style:** parametric-v1
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/sn74cbt16390dl/texas-instruments.html?utm_currency=USD®ion=nac) | N/A | N/A |
| [Mouser](https://www.mouser.com/ProductDetail/Texas-Instruments/SN74CBT16390DL?qs=FetendrIl6vWo6ntJ%252BenUg%3D%3D) | $3.11 | 0 |
| [Verical](https://www.verical.com/pd/texas-instruments-bus-switch-SN74CBT16390DL-526186?utm_currency=USD) | N/A | N/A |
- **Part Type:** Electromechanical Components
- **Manufacturer:** Texas Instruments
- **MPN:** SN74CBT16390DL
- **Mount Type:** Standard
- **Package / Case Code:** 16-SSOP
- **Pin Count:** 56
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | A1 | |
| 2 | 2B1 | |
| 3 | 2B2 | |
| 4 | A3 | |
| 5 | 2B3 | |
| 6 | 2B4 | |
| 7 | A5 | |
| 8 | 2B5 | |
| 9 | 2B6 | |
| 10 | A7 | |
| 11 | 2B7 | |
| 12 | 2B8 | |
| 13 | GND | |
| 14 | VCC | |
| 15 | A9 | |
| 16 | 2B9 | |
| 17 | 2B10 | |
| 18 | A11 | |
| 19 | 2B11 | |
| 20 | 2B12 | |
| 21 | A13 | |
| 22 | 2B13 | |
| 23 | 2B14 | |
| 24 | A15 | |
| 25 | 2B15 | |
| 26 | 2B16 | |
| 27 | NC | |
| 28 | NC | |
| 29 | ~{OE2} | |
| 30 | ~{OE1} | |
| 31 | A16 | |
| 32 | 1B16 | |
| 33 | 1B15 | |
| 34 | A14 | |
| 35 | 1B14 | |
| 36 | 1B13 | |
| 37 | A12 | |
| 38 | 1B12 | |
| 39 | 1B11 | |
| 40 | A10 | |
| 41 | 1B10 | |
| 42 | 1B9 | |
| 43 | VCC | |
| 44 | GND | |
| 45 | A8 | |
| 46 | 1B8 | |
| 47 | 1B7 | |
| 48 | A6 | |
| 49 | 1B6 | |
| 50 | 1B5 | |
| 51 | A4 | |
| 52 | 1B4 | |
| 53 | 1B3 | |
| 54 | A2 | |
| 55 | 1B2 | |
| 56 | 1B1 | |
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